Investors can set their own expected returns. For example, if the expected return of investors is 20%, they will sell the fund when the holding income reaches 20%.

Investors can sell in batches when they get the proceeds. When investors get the expected income and are not sure whether the fund will rise in the future, they can sell half of it first to ensure some income. The fund continues to rise and then sells half of it until the fund is sold. If the fund falls after reaching the expected return, then investors can sell it all.